scope:

This standard specifies the requirements for the design, performance and testing of malleable cast iron fittings with compression ends for steel pipes. It applies to steel piping systems for different application fields, such as gas supply, distribution of water for general purposes and for human consumption, irrigation, fire fighting, aqueous liquids, compressed air and gaseous fuel systems. It also applies to oil piping systems, provided the elastomeric sealing material is compatible with the oil and the operating conditions. It contains requirements and tests relating to compression fittings which can be disconnected from smooth walled steel pipes or other cylindrical metal structural elements, which are applicable for dismantleable joints. The fittings can also incorporate other types of connection, such as threaded, flanged, compression ends for connection of polyethylene pipes, etc., and can also take on various structural shapes, such as, straight piece, elbow or T-piece, etc. Their range of sizes covers nominal sizes DN 6 to DN 100 (size 1/8 to 4).